Datasheet > AD9985

AD9985

更新时间： 2022-11-26 07:23:58

品牌	Logo	应用领域
亚德诺 - ADI		显示器
页数	文件大小	规格书
32页	349K
描述
110 MSPS/140 MSPS Analog Interface for Flat Panel Displays

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数据手册

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AD9985 数据手册

AD9985

•

Data Byte to Base Address

Data Byte to (Base Address + 1)

Data Byte to (Base Address + 2)

Data Byte to (Base Address + 3)

Stop Signal

Data is read from the control registers of the AD9985 in a

similar manner. Reading requires two data transfer operations:

The base address must be written with the R/W bit of the slave

address byte low to set up a sequential read operation.

Reading (the R/ bit of the slave address byte high) begins at

Read from one control register

the previously established base address. The address of the read

•

Start Signal

Slave Address Byte (R/ Bit = Low)

•

Base Address Byte

Start Signal

Slave Address Byte (R/ Bit = High)

Data Byte from Base Address

Stop Signal

To terminate a read/write sequence to the AD9985, a stop signal

must be sent. A stop signal comprises a low-to-high transition

of SDA while SCL is high.

A repeated start signal occurs when the master device driving

the serial interface generates a start signal without first

generating a stop signal to terminate the current communi-

cation. This is used to change the mode of communication

(read, write) between the slave and master without releasing the

serial interface lines.

Read from four consecutive control registers

•

Start Signal

Slave Address Byte (R/ Bit = Low)

Base Address Byte

Start Signal

Slave Address Byte (R/ Bit = High)

Data Byte from Base Address

Data Byte from (Base Address + 1)

Data Byte from (Base Address + 2)

Data Byte from (Base Address + 3)

Stop Signal

•

Serial Interface Read/Write Examples

Write to one control register

•

Start Signal

Slave Address Byte (R/ Bit = Low)

•

Base Address Byte

Data Byte to Base Address

Stop Signal

Write to four consecutive control registers

SDA

SCL

BIT 6 BIT 5 BIT 4

BIT 3 BIT 2 BIT 1 BIT 0

ACK

BIT 7

•

Start Signal

Slave Address Byte (R/ Bit = Low)

•

Base Address Byte

Figure 13. Serial Interface—Typical Byte Transfer

Rev. 0 | Page 27 of 32

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AD9985A/PCB	ADI	110 MSPS/140 MSPS Analog Interface for Flat Panel Displays	获取价格
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AD9985AKSTZ-110	ADI	110 MSPS/140 MSPS Analog Interface for Flat Panel Displays	获取价格
AD9985AKSTZ-140	ADI	110 MSPS/140 MSPS Analog Interface for Flat Panel Displays	获取价格